Datasheet > MAX5861

MAX5861

更新时间： 2023-12-20 18:46:14

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
198页	6105K
描述
DOCSIS 3.1高密度SCQAM和OFDM下行电缆调制器

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MAX5861 数据手册

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MAX5861

DOCSIS 3.1 High-Density SCQAM and

OFDM Downstream Cable Modulator

General Description

Beneﬁts and Features

The MAX5861 is an integrated, high-density, SCQAM and

OFDM downstream cable modulator, digital up-converter

(DUC) and RF digital-to-analog converter (RF-DAC). The

MAX5861 is DOCSIS 3.1-compliant and is optimized for

converged cable access platform (CCAP) hardware. The

MAX5861 performs baseband I/Q symbols to RF up-

conversion to digitally synthesize a selectable combina-

tion of SCQAM and OFDM blocks on a single RF port.

A combination of up to six 192MHz blocks of SCQAM

or OFDM channels can be powered on at any one time,

where a block is defined as either 32 X 6MHz (or 24 X

8MHz) SCQAM channels or an OFDM channel (up to

192MHz wide). The MAX5861 features three differential

time-multiplexed input data ports that support LVDS or

SSTL 1.2/1.5 in DDR mode.

● High-Density Cable Downstream Modulator

• Combine Up to Six 192MHz Blocks of 32 x 6MHz

SCQAM Channels and DOCSIS 3.1 OFDM Channels

• Integrated 14-Bit 4.9152Gsps RF-DAC

● Highly Flexible and Configurable

• ITU-T J.83 Annex A, B, and C SCQAM Channels

• IFFT Processing D3.1 OFDM Channels

• LVDS or SSTL 1.2/1.5 DDR Data Ports

• One 10-Bit SCQAM Port with 160-Channel Capacity

• Two 9-Bit OFDM Ports with 6 OFDM-Channel

Capacity

• Channel Bandwidths:

• 1MHz to 8MHz SCQAM

• 24MHz/48MHz/96MHz/192MHz OFDM

• 192MHz IFFT Bypass Mode

• Full SCQAM Agility within 192MHz Block

• Block Agility within 1218MHz Output Bandwidth

The MAX5861 SCQAM input port A accepts 10-bit

Forward Error Correction (FEC)-encoded data for up to

160 (6MHz) individually programmable channels. The

SCQAM path performs QAM mapping, root raised cosine

(RRC) pulse shaping, and resampling, compliant with

ITU-T J.83 Annex A, B, and C. This port also supports

1024-QAM with the use of an offset bias bit. Up to four

channels can be operated in RRC filter bypass mode

at up to 2.5Msym/s for legacy communications to older

generation devices.

● Additional Features Ease RF Design

• Programmable Digital Predistortion

• High Output Power: 9dBm (Peak CW)

● Low-Power, Compact Solution

• 5.9W with 128 SCQAMs + 2 OFDM Channels

• Operating Temperature Range T = -40°C to

T = +110°C

• 12mm x 18mm, 308-Ball LFBGA

Each of two available 9-bit OFDM ports, B or C, support

up to three 12-bit OFDM IFFT-processing channels. Each

IFFT-processing channel supports OFDM blocks of up to

192MHz bandwidth with selectable 4k or 8k subcarriers

and up to 4096-QAM modulation options. Each of the two

OFDM ports also allow bypassing of the IFFT processing

with a single 18-bit I/Q data path to support user-defined

modulation at up to 192MHz bandwidth.

Applications

● DOCSIS 3.0/3.1 and DVB-C/C2

● CCAP, Edge QAM, CMTS

● Remote PHY, Coax Media Converters

● Multi-Dweller Units (MDU), Mini-Headends

A cascade of interpolation filters, complex modula-

tors, channel combiners and Direct Digital Frequency

Synthesizers (DDFS) up-convert the SCQAM and/or

OFDM signals with full frequency agility from 43MHz to

1218MHz. The up-converted spectrum is fed to a Digital

Pre-Distortion (DPD) block to compensate for distortion

performance limitations in the DAC and external output

amplifiers.

Simpliﬁed Block Diagram

160-CHANNEL

QAM MODULATOR

5 x 192MHz

SCQAM

PORT

RF DAC

14-BIT, 5Gsps

1.2GHz BW

+9dBm P_OUT

OUT

B,C

OFDM MODULATOR

6 x 192MHz

OFDM

PORTS

Ordering Information appears at end of data sheet.

19-7576; Rev 2; 8/18

12 3 4 5 6 7...198

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与MAX5861相关器件

型号	品牌	获取价格	描述	数据表
MAX5861TEXA+	MAXIM	获取价格	Telecom IC,
MAX5862	ADI	获取价格	高密度下行电缆QAM调制器
MAX5863	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic Performance, 7.5Msps Analog Front End
MAX5863E/D	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic Performance, 7.5Msps Analog Front End
MAX5863ETM	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic Performance, 7.5Msps Analog Front End
MAX5863ETM+	MAXIM	获取价格	RF and Baseband Circuit, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, TQFN-48
MAX5863ETM+T	MAXIM	获取价格	暂无描述
MAX5863ETM-T	MAXIM	获取价格	RF and Baseband Circuit, CMOS, 7 X 7 MM, 0.80 MM HEIGHT, TQFN-48
MAX5864	MAXIM	获取价格	Ultra-Low-Power, High-Dynamic- Performance, 22Msps Analog Front End
MAX5864	ADI	获取价格	超低功耗、高动态性能、22Msps模拟前端

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